       Re: Re: Output display of exponential function in Mathematica

• To: mathgroup at smc.vnet.net
• Subject: [mg62700] Re: [mg62686] Re: Output display of exponential function in Mathematica
• From: carlsonkw at comcast.net
• Date: Thu, 1 Dec 2005 00:46:05 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

```Log[1/E^.5]
-0.5
Log[1/E^-.5] ? .5
True
Refine[1/E^x, 0<x<1]
E^-x
Or if you need to,
Refine[Log[1/E^x], 0<x<1]
-x
Kris
-------------- Original message --------------

> On Sun, 27 Nov 2005 08:24:53 +0000 (UTC), Bob Hanlon
> wrote:
>
> >The output that you want is "unstable", i.e., Mathematica automatically
> >converts it.
> >
>
> Thanks.
>
> I have another question if you don't mind.
>
> I'm trying to just check and see if I got a whole bunch of
> even-numbered study exercises right on exponents and natural logs.
> The answers to the odds are in the book.
>
> As an example, LN(1/e^2) equals what?
>
> My answer is -1/2.
>
> In mathematica, I tried Simplify[LN(1/e^2)] and it just spit the same
> thing out as the output. I also tried a couple of variations of
> Solve[LN[1/e^2] = X] with essentially the same result
>
> How would you get Mathematica to verify that the answer is -1/2.
>
> Thanks a lot.

```

• Prev by Date: Re: Output display of exponential function in Mathematica
• Next by Date: Re: Re: Output display of exponential function in Mathematica
• Previous by thread: Re: Output display of exponential function in Mathematica
• Next by thread: Re: Re: Output display of exponential function in Mathematica